> So we need something like
>
> crossStaff =
> #(define-music-function (parser location notes) (ly:music?)
> (_i "Create cross-staff stems")
> #{
> \temporary\override Stem #'cross-staff = #cross-staff-connect
> \temporary\override Flag #'style = #'no-flag
> $notes
> \revert Stem #'cross-staff
> \revert Flag #'style
> #})
>
> and, as a corrollary, \temporary\whatever and \undo\whatever will be a
> proper push/pop pair.
I like the name \temporary. Is this of practical use outside of music
functions also?
> Opinions? It might also be possible to do
>
> \temporary { \override Stem #'cross-staff = #cross-staff-connect
> \override Flag #'style = #'no-flag }
> $notes
I like that too. What about
\push { Stem.cross-staff = #cross-staff-connect
Flag.style = #'no-flag }
$notes
\pop { Stem.cross-staff
Flag.style }
[I'm using the `.' operator creatively; no idea whether this works,
and no need to discuss this in case it doesn't :-)]
Werner
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